This is only true if it plateaus. What you are saying is “I don’t think LLMs will achieve superintelligence.” Which is a fine opinion to have, but it’s an opinion.
In other words, superintelligence often referred to as AGI might either be months away or just VC-Money induced cult-speak many fall victim to.
It doesn’t matter because the only certainty is that it’s not here now, and neither tomorrow etc.
For coding you still need to be in control if you want a good result.